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Citation: ZHU Xin, ZHANG Shu-Yuan, LI Hui, LI Zi-Fa. Liquid Crystalline Behaviour of Schiff-base Type Liquid Crystalline Crown Ether Potassium Complexes Containing Dibenzo-18-crown-6 Unit[J]. Chinese Journal of Applied Chemistry, ;2010, 27(1): 38-42. shu

Liquid Crystalline Behaviour of Schiff-base Type Liquid Crystalline Crown Ether Potassium Complexes Containing Dibenzo-18-crown-6 Unit

ZHU Xin ^a,b ,
ZHANG Shu-Yuan ^a ,
LI Hui ^a ,
LI Zi-Fa ^c

a.
a. Department of Chemistry, Zhengzhou University, Zhengzhou 450052;
b.
b. College of Pharmacy, Henan University of Traditional Chinese Medicine, Zhengzhou;
c.
c. College of Materials and Engineering, Zhengzhou University, Zhengzhou 450052

Received Date: 8 January 2009
Available Online: 25 May 2009
Fund Project: 国家自然科学基金(29974026) (29974026)河南省自然科学基金(082300420060) (082300420060)河南省教育厅自然科学基金(2006150028) 资助项目 (2006150028)

Two series of schiff-base type liquid crystalline crown ether potassium complexes containing dibenzo-18-crown-6 were synthesized from cis-and trans-4,4'-bis[(4'-alkoxylbiphenyl-4-carboxy) benzylideneamino] dibenzo-18-crown-6 in yields of 85.5%~92.1% and 88.7%~90.7% respectively.Their structures and properties were characterized by elemental analysis,IR,UV-Vis,AAS,DSC,XRD and polarizing optical microscopy(POM) with a heating stage.Results show that the complexes changed into liquid crystal phase upon heated to temperatures higher than their melting points,and the melting points T_m and isotropization temperature T_i of the complexes changed regularly with the increase of the carbon number in the terminal alkoxyl groups.There is a gradual increase in smectic phase length and a gradual decrease in nemetic phase length.The liquid crystalline phase temperature range became broader after complexation.
- potassium complexes,
- liquid crystalline crown ether,
- schiff-base type,
- thermotropic liquid crystal
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Liquid Crystalline Behaviour of Schiff-base Type Liquid Crystalline Crown Ether Potassium Complexes Containing Dibenzo-18-crown-6 Unit

南开大学师唯/华北电力大学（保定）刘景维：二维配位聚合物中有序的亲锂冠醚位点用于无枝晶锂沉积

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通讯作者: 陈斌, bchen63@163.com